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The Faraday laws

VC4.4.5.3
The Faraday laws
The Faraday laws

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Description

In 1833 Michael Faraday described the laws of electrolysis. He showed that there is a quantitative relationship between the amount of charge and the conversion of a chemical reaction at the electrode during electrolysis.

In this experiment, the Faraday laws are to be checked by electrolysis of aqueous zinc iodide solution and the Faraday constant F is to be determined. Zinc iodide is used because the products zinc and iodine can be quantitatively detected by weighing or by titration.

Components of equipment sets

1 6644071  8  Electrochemistry demonstration unit, CPS LD
1 666425  4  Panel frame C50, two-level, for CPS LD
1 666472  4  Table for electrochemistry, CPS LD
1 664401  4  Electrochemistry accessories set LD
1 6029750  4  Burette straight cock, 10 ml LD
1 665816  4  Burette filling funnel plastic, 35 mm Ø LD
1 666559  8  Burette clamp for 1 burette, roller clamp LD
1 30042  4  Stand rod, 47 cm, 12 mm diam. LD
1 30002  4  Stand base, V-shaped, small LD
1 602022  4  Beaker Boro 3.3, 100 ml, squat LD
1 664132  4  Beaker, Boro3.3, 600 ml, squat LD
1 665793  4  Volumetric flask, Boro 3.3, 100 ml LD
1 665795  4  Volumetric flask, Boro 3.3, 500 ml LD
1 665754  4  Measuring cylinder 100 ml, with plastic base LD
1 6045662 Spatula, double ended, 210 mm LD
1 6677991 Analytical balance, 220 g : 0.0001 g LD
1 666584  4  Filtration stand for two funnels LD
1 665005  4  Funnel, Boro 3.3, 100 mm diam. LD
1 609082  4  Folded filter 125mmØ Typ: 595 LD
1 6755220  4  Zinc iodide solution, 50 %, 50 g LD
GHS05GHS09 Danger H314 H410
1 6738000  4  Sodium thiosulfate-5-hydrate, 100 g LD
1 6747920  4  Sulfuric acid, diluted, approx. 2 N (= 10 %), 500 ml LD
GHS05 Warning H290 H315 H319
1 6749220  4  Starch, soluble, 50 g LD
1 6753400  4  Water, pure, 1 l LD
1 661242  4  Wash bottle, PE, 250 ml LD

Experiment Instructions

PDF (Experiment description) PDF (Experiment description) C4.4.5.3 The Faraday laws
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